text: // Copyright 2015 PDFium Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  
  // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
  
  #ifndef CORE_FXCODEC_JBIG2_JBIG2_GRDPROC_H_
  #define CORE_FXCODEC_JBIG2_JBIG2_GRDPROC_H_
  
  #include "core/fxcodec/fx_codec_def.h"
  #include "core/fxcrt/fx_coordinates.h"
  #include "core/fxcrt/fx_system.h"
  
  class CJBig2_ArithDecoder;
  class CJBig2_BitStream;
  class CJBig2_Image;
  class IFX_Pause;
  struct JBig2ArithCtx;
  
  class CJBig2_GRDProc {
   public:
    CJBig2_GRDProc();
  
    CJBig2_Image* decode_Arith(CJBig2_ArithDecoder* pArithDecoder,
                               JBig2ArithCtx* gbContext);
  
    FXCODEC_STATUS Start_decode_Arith(CJBig2_Image** pImage,
                                      CJBig2_ArithDecoder* pArithDecoder,
                                      JBig2ArithCtx* gbContext,
                                      IFX_Pause* pPause);
    FXCODEC_STATUS Start_decode_MMR(CJBig2_Image** pImage,
                                    CJBig2_BitStream* pStream,
                                    IFX_Pause* pPause);
    FXCODEC_STATUS Continue_decode(IFX_Pause* pPause);
    FX_RECT GetReplaceRect() const { return m_ReplaceRect; }
  
    bool MMR;
    uint32_t GBW;
    uint32_t GBH;
    uint8_t GBTEMPLATE;
    bool TPGDON;
    bool USESKIP;
    CJBig2_Image* SKIP;
    int8_t GBAT[8];
  
   private:
    bool UseTemplate0Opt3() const;
    bool UseTemplate1Opt3() const;
    bool UseTemplate23Opt3() const;
  
    FXCODEC_STATUS decode_Arith(IFX_Pause* pPause);
    FXCODEC_STATUS decode_Arith_Template0_opt3(CJBig2_Image* pImage,
                                               CJBig2_ArithDecoder* pArithDecoder,
                                               JBig2ArithCtx* gbContext,
                                               IFX_Pause* pPause);
    FXCODEC_STATUS decode_Arith_Template0_unopt(
        CJBig2_Image* pImage,
        CJBig2_ArithDecoder* pArithDecoder,
        JBig2ArithCtx* gbContext,
        IFX_Pause* pPause);
    FXCODEC_STATUS decode_Arith_Template1_opt3(CJBig2_Image* pImage,
                                               CJBig2_ArithDecoder* pArithDecoder,
                                               JBig2ArithCtx* gbContext,
                                               IFX_Pause* pPause);
    FXCODEC_STATUS decode_Arith_Template1_unopt(
        CJBig2_Image* pImage,
        CJBig2_ArithDecoder* pArithDecoder,
        JBig2ArithCtx* gbContext,
        IFX_Pause* pPause);
    FXCODEC_STATUS decode_Arith_Template2_opt3(CJBig2_Image* pImage,
                                               CJBig2_ArithDecoder* pArithDecoder,
                                               JBig2ArithCtx* gbContext,
                                               IFX_Pause* pPause);
    FXCODEC_STATUS decode_Arith_Template2_unopt(
        CJBig2_Image* pImage,
        CJBig2_ArithDecoder* pArithDecoder,
        JBig2ArithCtx* gbContext,
        IFX_Pause* pPause);
    FXCODEC_STATUS decode_Arith_Template3_opt3(CJBig2_Image* pImage,
                                               CJBig2_ArithDecoder* pArithDecoder,
                                               JBig2ArithCtx* gbContext,
                                               IFX_Pause* pPause);
    FXCODEC_STATUS decode_Arith_Template3_unopt(
        CJBig2_Image* pImage,
        CJBig2_ArithDecoder* pArithDecoder,
        JBig2ArithCtx* gbContext,
        IFX_Pause* pPause);
    CJBig2_Image* decode_Arith_Template0_opt3(CJBig2_ArithDecoder* pArithDecoder,
                                              JBig2ArithCtx* gbContext);
  
    CJBig2_Image* decode_Arith_Template0_unopt(CJBig2_ArithDecoder* pArithDecoder,
                                               JBig2ArithCtx* gbContext);
  
    CJBig2_Image* decode_Arith_Template1_opt3(CJBig2_ArithDecoder* pArithDecoder,
                                              JBig2ArithCtx* gbContext);
  
    CJBig2_Image* decode_Arith_Template1_unopt(CJBig2_ArithDecoder* pArithDecoder,
                                               JBig2ArithCtx* gbContext);
  
    CJBig2_Image* decode_Arith_Template2_opt3(CJBig2_ArithDecoder* pArithDecoder,
                                              JBig2ArithCtx* gbContext);
  
    CJBig2_Image* decode_Arith_Template2_unopt(CJBig2_ArithDecoder* pArithDecoder,
                                               JBig2ArithCtx* gbContext);
  
    CJBig2_Image* decode_Arith_Template3_opt3(CJBig2_ArithDecoder* pArithDecoder,
                                              JBig2ArithCtx* gbContext);
  
    CJBig2_Image* decode_Arith_Template3_unopt(CJBig2_ArithDecoder* pArithDecoder,
                                               JBig2ArithCtx* gbContext);
  
    uint32_t m_loopIndex;
    uint8_t* m_pLine;
    IFX_Pause* m_pPause;
    FXCODEC_STATUS m_ProssiveStatus;
    CJBig2_Image** m_pImage;
    CJBig2_ArithDecoder* m_pArithDecoder;
    JBig2ArithCtx* m_gbContext;
    uint16_t m_DecodeType;
    int m_LTP;
    FX_RECT m_ReplaceRect;
  };
  
  #endif  // CORE_FXCODEC_JBIG2_JBIG2_GRDPROC_H_
  